Improvement in automatic fans



G. H. TWHAOMPSUN. YAutomaticiifans.

Patented May I9, 1874;

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GEORGE H. THOMPSON, OF ATOHISON, KANSAS, ASSIGNOR TO JOHN PEN TON t CO.,OF SAME PLACE.

IMPROVEMENT IN AUTMATIC FANS.

Specification forming part of ALetters Patent No. 151,1?, dated May 19,1874; application filed January 31, 1874.

To all whom 'it'may concern:

Be it known that I, GEORGE H. TEoMPsoN, of Atchison, in the county ofAtcliison and in the State of Kansas, have invented certain new anduseful Improvements in Fans for Dining- Tables; and do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the, accompanying drawings making a part ot' thisspecification, in which- Figure l is a side elevation of my improveddevice. Fig. 2 is a like view of the mechanism employed for driving` thefans, and Fig. 3 is an enlarged perspective View of a section for 'usein increasing the length of the frame.

Letters of like name and kind refer to like parts in each of theiigures.

The object of my invention is to provide a simple, cheap, and efficientmeans for creating` a current of air over and arountl a table, bed, &c.;and it consists, principally, in the construction and combination of theoperative parts of the apparatus, substantially as and for the purposehereinafter specified. It consists, further, in the construction andcombination of the mainframe and the extension section, substantially asand for the purpose hereinafter shown. y

In thel annexed drawings, A represents the base or frame of myapparatus, constructed, preferably, from a solid board, from the upperside of which, near its edge, extend upward, in parallel lines, two sidepieces, B and B, that have substantially the form shown in Fig. l, andserve to sustain and inclose Vthe operative mechanism. J ournaled withinand extending horizontally between the vertical pieces B and B are twoshafts, Gand D, upon the iirst of which is secured a winding-barrel, E,that is provided upon one end with a ratchet-wheel, F, which latter iscaused to engage with a pawl, G, that is pivoted upon a gear-wheel, H,that is in turn journaled upon said shaft. Upon the second shaft D issecured a pinion, I, that mesheswith and receives motionfrom thegear-wheel H and a l bevel-gear, K, that in turn meshes with and impartsmotion to a bevel-pinion, L, which is attached to or upon the upper endof a shaft that is journaled in a vertical position within the base A.Immediately below the bevelpinion L is secured a double grooved pulley,M, around or within each groove m of which passes an endless belt, N,that from 'thence extends horizontally outward to and around a groovedpulley, O, which is secured upon the upper end of a vertical shaft, P,that is journaled within the base A. As thus arranged, it will be seenthat if a cord and weight, or a coiled spring, be attached to thewinding-barrel, and arranged to rotatel the shaft C, the shafts D andP,through the intervening mechanism, will be caused to revolve, so thatit' suitable horizontal arms Q and dependent fans E are attached to thelower end of said shafts P the motion of said fans will create a currentof air that will correspond in velocity to the speed with which saidfans are moved.

It is intended that the apparatus shall be suspended from the ceiling ofa room, over a table, bed, 85e., by means of a tube, S, through which,if a weight is employed, the operatingcord shall pass downward to thewinding-barrel, y said cord being carried from the upper end ot' saidtube, along said ceiling, to some convenient point, and said weightattached to its outer end. The exterior of the frame is to lieornamented, and the fans made in open-work and ornamental, as shown. Y

For use over tables having more than ordiy nary length, it is desirablethat the apparatus 'should be correspondingly extended, to effect whichresult the following-described means are employed.

A frame-section, Af, having a length somewhat greater than the diameterof one of the fan-wheels, and a width somewhat less than the width ofthe frame or base A, is constructed of bars, with one end open, as shownin Fig. 3. Within the end ofthe base A are provided slots a and a, thatreceive the ends ofthe section A, each of which latter is provided withtwo notches, a and a", that are arranged, re spectively, within itsupper side near said end, and within its lower side at a greaterdistance outward from the same. rlwo pins, c" and df/y are placed withinthe base A, and, extending horizontally across each slot a, engage, re;spectively, with the notches a and a, and

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form bearings upon which said section rests, said outer pin afvsustaining the downward pressureof said section, while said pin amsustains the upward pressure of itsy inner end.

The appara-tus thus constructed furnishes a cheap, efoient, and durablemeans for creating` an artiioial current of air Within an apartment, andis capable ot' affording a material increase in comfort to the occupantsthereof during,` hot weather.

Having thus fully set forth the nature and merits of my invention, whatI claim as new,

l. The frame A, B, and. B, shafts C, D, P, and I), winding-barrel E,gear-wheels H and vK, pinions I and L, pulleys M, O, and O,belts I N andN, and fans Q and It, said parts being In testimony that I olaim theforegoing I- have hereunto set my hand this 17th day of November, 1873.

` G. H. THOMPSON.

Witnesses Guo. S. PRINDLE, JOHN R. YOUNG.

